Practice problems across 75+ categories
Practice problems frequently asked at Google • 3407 problems | 851 Easy | 1775 Medium | 761 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 676 | Decode String | Medium | StringStackRecursion |
| 677 | Decode the Message | Easy | Hash TableString |
| 678 | Decode the Slanted Ciphertext | Medium | StringSimulation |
| 679 | Decode Ways | Medium | StringDynamic Programming |
| 680 | Decode Ways II | Hard | StringDynamic Programming |
| 681 | Decode XORed Array | Easy | ArrayBit Manipulation |
| 682 | Decode XORed Permutation | Medium | ArrayBit Manipulation |
| 683 | Decoded String at Index | Medium | StringStack |
| 684 | Decompress Run-Length Encoded List | Easy | Array |
| 685 | Decrease Elements To Make Array Zigzag | Medium | ArrayGreedy |
| 686 | Decremental String Concatenation | Medium | ArrayStringDynamic Programming |
| 687 | Decrypt String from Alphabet to Integer Mapping | Easy | String |
| 688 | Deep Merge of Two Objects | Medium | JavaScript |
| 689 | Deep Object Filter | Medium | Database |
| 690 | Deepest Leaves Sum | Medium | TreeDepth-First SearchBreadth-First Search |
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